666002122211 has 4 divisors (see below), whose sum is σ = 666046928400. Its totient is φ = 665957316024.

The previous prime is 666002122189. The next prime is 666002122229. The reversal of 666002122211 is 112221200666.

666002122211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 666002122211 - 2⁶ = 666002122147 is a prime.

It is a super-3 number, since 3×666002122211³ (a number of 36 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (666002622211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22380791 + ... + 22410528.

It is an arithmetic number, because the mean of its divisors is an integer number (166511732100).

Almost surely, 2^666002122211 is an apocalyptic number.

666002122211 is a deficient number, since it is larger than the sum of its proper divisors (44806189).

666002122211 is a wasteful number, since it uses less digits than its factorization.

666002122211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44806188.

The product of its (nonzero) digits is 3456, while the sum is 29.

Adding to 666002122211 its reverse (112221200666), we get a palindrome (778223322877).

The spelling of 666002122211 in words is "six hundred sixty-six billion, two million, one hundred twenty-two thousand, two hundred eleven".